Winterrowd Lake Dam Reservoir Report

Last Updated: December 5, 2025

Winterrowd Lake Dam, located in Williamson County, Texas, was completed in 1956 with a primary purpose of providing fire protection, stock, or a small fish pond.


°F

°F

mph

Wind

%

Humidity

Summary

The dam, standing at 23 feet high and stretching 605 feet in length, is classified as an earth dam with a buttress core type. It is regulated by the Texas Commission on Environmental Quality (TCEQ) and undergoes state permitting, inspection, and enforcement processes to ensure its safety and compliance with regulations.

The dam's reservoir has a normal storage capacity of 93 acre-feet, with a maximum storage of 143 acre-feet. Despite the absence of a spillway, the dam is equipped with one outlet gate. The risk assessment for Winterrowd Lake Dam is rated as high (2), highlighting the importance of proper risk management measures. With its association with the USDA NRCS and its location on TR-Spring Branch, this structure serves as a crucial water resource for the region, supporting various purposes such as fire protection, recreation, and stock maintenance. For water resource and climate enthusiasts, Winterrowd Lake Dam is an intriguing case study in dam infrastructure and management.

Year Completed

1956

Dam Length

605

Dam Height

23

River Or Stream

TR-SPRING BRANCH

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

23

Nid Storage

143

Structural Height

23

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

23
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.